For commercial use (what it's designed for) I'd expect to see maybe 3-5 second cycle.
I believe 8 second cycle time is pretty normal, pretty standard, for a two to ten thousand dollar machine. The extra money is quality components and beef. This splitter weighs 1,449 pounds. It is no light weight, and Timberwolf built it to last the daily grind. I think the hydraulic tank is 20 gallons, and a GX 630 twin cylinder, 18 to 20 hp., pulling a 22 gpm pump. There are better designs. For example, I would have like to try the vertical, table splitters with log lift, but they were the next step up, and considerably more money. I wanted a splitter with a log lift and adjustable four-way. I read some bad reviews, and experiences, with some custom builders, and one name brand. I kept coming back to Timberwolf after seeing and reading some of the posts on here about them. I don't regret buying it. If I could get some logs for it at a decent price I will keep it. Has not happened this summer, so it is now listed for sale. Three to five second cycle times? I've only read that on circular blade processors in the upper five digit dollar numbers. You probably would not want it on a big log, log splitter anyway. You still have to man handle and re-split, even with the vertical splitters. Then there is fatigue after a bit where your reflexes slow down. Processors split in a cage, or trough with shields.
I think I 'saved time', cumulative cycle time if you will, with my Timberwolf by
not getting the six-way splitter wedge for it. For one, many people posted they had one they did not use. Several reasons, but jamming seemed to be the main reason. Having to re-split anyway was another. Timber wolf used to make a TW-5 fast cycle splitter. A TW-5 with a
smaller cylinder and less tonnage. They also used to make a TW-6 with a box wedge. I believe both are discontinues, and assume it is due to tonnage issues, but perhaps cost also with the TW-6.